Nate the great is a detective, and his dog sludge helps him.

This time, Rosamond was visiting scandinavia. A letter from Rosamond came to him.

It said that she lost something in Sweden so she asked him to find out where it is.

Nate the Great ignored it, then the next day another letter came to him again.

The letter said that if he don't take the case, she will call the king of Sweden up and she knock the door to him and ask him to find the stuff.

Nate thought that was a international case, so he took the case.

At first, he visited Annie's house as she's a best friend of Rosamond. She said she helped Rosamond packing her suitcase.

She packed clothes, toothpastes and her four cat's. Nate didn't know what's her missing stuff that has long nose, smart like him and lives in dark places.

When he visited Esmeralda and heard that Rosamond's trip plan, he finally knows that was toy troll.

Besides, he found that the reason Rosamond thought she lost her toy troll.

After she came back to home, she complained he didn't take the case. She didn't know Nate took the case as he couldn't tell her that.

Nate asked her to open her suitcase and he found the toy troll in the right pocket of the suitcase.

She didn't remember she put her toy troll in the right pocket because it was a special place.

Nate got a hint from his dog sludge didn't remember where he hid his own bone.

At last, Nate the Great solved the case, and he saved the King of the Sweden from Rosamond.